Abstract The magnetization of compounds DyAu2 and DyAg2 was measured at temperatures between 4.2° to 300 °K and under the magnetic field up to 100 kOe. Both compounds were found to be antiferromagnetic. In DyAg2, spin flopping occurred at low temperature. In DyAu2, a jump at 25 °K in the susceptibility-temperature curve was observed. At 4.2 °K, the magnetization increased in two steps with magnetic field. Such stepped transformation gradually blurred with rise of temperature till it vanished above 25 °K. These facts may be interpreted as an antiferromagnetic structture change.